Yaskawa MP940 - Manual (Page 54)

3.2 Start and Stop Sequences
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3.2.2 Start Sequence
The MP940 makes a number of determinations at startup. If an error is detected, the ERR
indicator will flash and the error content will be indicated by the number of times the indica-
tor flashes. When the indicator is flashing, the CP-717 cannot be operated. For details on the
error content and the action to be taken, see Chapter 10 SERVOPACK Inspection, Mainte-
nance, and Troubleshooting. The following table shows the MP940 indicators.
Table 3.2 Indicators and Indicator Patterns
Type
Indicator
Meaning
RDY RUN ALM BAT
Normal Lit Unlit Unlit Unlit The user program is stopped.
Lit Lit Unlit Unlit The user program is executing normally.
Error Unlit Unlit Lit Unlit Hardware reset status (while display is continu-
ing)
Unlit Unlit Unlit Unlit During initial execution (while display is con-
tinuing)
Unlit - Lit Unlit A serious error has occurred.
Unlit Unlit Flashing Unlit • Flashing twice: RAM error
• Flashing three times: ROM error
• Flashing four times: Peripheral LSI error
Alarm - - - Lit Battery alarm
Lit Lit Lit Unlit • Calculation error
• I/O error
Reported to the system (S)
register (no indicator dis-
play) Hardware status (power loss, RUN/STOP, test
mode, etc.)
Other Flashing Flashing Unlit Unlit Memory initialization has been completed for
the DIP switch settings.
RDY and RUN flash repeat-
edly at the same time.
Unlit Unlit Lit Unlit Offline test mode